April 18, 2018 12:33 pm Walk MS Aims to Find End to Multiple Sclerosis Phil Bresnick a Walk MS participant explains why it’s important for him to join this annual San Diego fundraising walk. US & World Videos 3:45 What is brain fog? 2:58 Climate change is causing distress, anxiety among young Americans 1:32 How to prevent mosquito bites 2:07 CDC issues new guidelines for IUD pain management